U.S. patent number 10,163,544 [Application Number 15/611,252] was granted by the patent office on 2018-12-25 for wire harness for suppression of vibration of a conductive path.
This patent grant is currently assigned to YAZAKI CORPORATION. The grantee listed for this patent is YAZAKI CORPORATION. Invention is credited to Hideomi Adachi, Toshihiro Nagashima, Takeshi Ogue, Masahide Tsuru, Kenta Yanazawa, Hiroyuki Yoshida.
United States Patent |
10,163,544 |
Nagashima , et al. |
December 25, 2018 |
Wire harness for suppression of vibration of a conductive path
Abstract
A wire harness includes a conductive path including a braided
part and a sheath member accommodating the conductive path so as to
protect the conductive path. The braided part is provided as an
outermost layer of the conductive path. The braided part includes a
cushion part having elasticity in a radial direction of the
conductive path and projecting outward in the radial direction
toward the sheath member.
Inventors: |
Nagashima; Toshihiro
(Makinohara, JP), Adachi; Hideomi (Makinohara,
JP), Ogue; Takeshi (Makinohara, JP), Tsuru;
Masahide (Makinohara, JP), Yoshida; Hiroyuki
(Makinohara, JP), Yanazawa; Kenta (Makinohara,
JP) |
Applicant: |
Name |
City |
State |
Country |
Type |
YAZAKI CORPORATION |
Tokyo |
N/A |
JP |
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|
Assignee: |
YAZAKI CORPORATION (Tokyo,
JP)
|
Family
ID: |
60483526 |
Appl.
No.: |
15/611,252 |
Filed: |
June 1, 2017 |
Prior Publication Data
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Document
Identifier |
Publication Date |
|
US 20170352449 A1 |
Dec 7, 2017 |
|
Foreign Application Priority Data
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|
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|
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Jun 3, 2016 [JP] |
|
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2016-111449 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01B
7/0045 (20130101); B60R 16/0207 (20130101); H01B
7/0266 (20130101); B60R 16/0215 (20130101); H01B
9/024 (20130101); H01B 7/189 (20130101) |
Current International
Class: |
H01B
7/00 (20060101); H01B 7/02 (20060101); B60R
16/02 (20060101); H01B 9/02 (20060101); H01B
7/18 (20060101) |
Field of
Search: |
;174/72A |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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103703520 |
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Apr 2014 |
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CN |
|
103703640 |
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Apr 2014 |
|
CN |
|
103890862 |
|
Jun 2014 |
|
CN |
|
104575768 |
|
Apr 2015 |
|
CN |
|
105336408 |
|
Feb 2016 |
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CN |
|
7-320558 |
|
Dec 1995 |
|
JP |
|
2011-254614 |
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Dec 2011 |
|
JP |
|
Other References
Office Action dated Sep. 6, 2018 by the State Intellectual Property
Office of P.R. China in counterpart Chinese Patent Application No.
201710404554.1. cited by applicant.
|
Primary Examiner: McAllister; Michael F
Attorney, Agent or Firm: Sughrue Mion, PLLC
Claims
What is claimed is:
1. A wire harness comprising: a conductive path including a
conductor, an insulator formed on an outer peripheral surface of
the conductor, and a braided part formed on an outer peripheral
surface of the insulator; and a sheath member accommodating the
conductive path so as to protect the conductive path, wherein the
braided part is provided as an outermost layer of the conductive
path, and the braided part includes a cushion part having
elasticity in a radial direction of the conductive path and
projecting outward in the radial direction toward the sheath
member.
2. The wire harness as set forth in claim 1, wherein the cushion
part is made of element wires of the braided part.
3. The wire harness as set forth in claim 1, wherein the cushion
part has a cotton shape.
4. The wire harness as set forth in claim 1, wherein the sheath
member has a tubular body form.
5. The wire harness as set forth in claim 1, wherein the sheath
member has a casing body form.
6. The wire harness as set forth in claim 1, wherein the cushion
part is provided over an entirety of the braided part in a
longitudinal direction of the conductive path.
7. The wire harness as set forth in claim 1, wherein the cushion
part is partially provided in the braided part in a longitudinal
direction of the conductive path.
8. The wire harness as set forth in claim 1, wherein the wire
harness further includes a vane shaped cushion member which is
attached to the braided part and has flexibility.
9. The wire harness as set forth in claim 1, wherein the braided
part is formed by metallic element wires having an electric
conductivity.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
This application is based on Japanese Patent Application (No.
2016-111449) filed on Jun. 3, 2016, the contents of which are
incorporated herein by way of reference.
BACKGROUND
The present invention relates to a wire harness and more
particularly to a wire harness including a conductive path with a
braided part and a sheath member which accommodates and protects
the conductive path.
In order to electrically connect together devices mounted on a
motor vehicle, a wire harness is used. The wire harness includes a
sheath member having a tubular body form and one or a plurality of
conductive paths accommodated in the sheath member. For instance,
in the wire harness disclosed in below-described patent literature
1, the wire harness is arranged so as to pass under the floor of a
vehicle body of a motor vehicle. In the wire harness, a part
corresponding to the under-floor of the vehicle is arranged
straight. Such a wire harness is formed so as to be long. In the
below-described patent literature 1, especially, as for the part
arranged straight, a below-described matter is understood. Namely,
it is understood that the conductive path in the sheath member is
vibrated by a vibration during driving of a vehicle.
[Patent Literature 1] JP 2011-254614 A
SUMMARY
It is therefore to one advantageous aspect of the invention to
provide a wire harness which can suppress a vibration of a
conductive path in a sheath member and prevent a damage of it.
According to one aspect of the invention, there is provided a wire
harness including:
an conductive path including a braided part; and
a sheath member accommodating the conductive path so as to protect
the conductive path, wherein
the braided part is provided as an outermost layer of the
conductive path, and
the braided part includes a cushion part having elasticity in a
radial direction of the conductive path and projecting outward in
the radial direction toward the sheath member.
The cushion part may be made of element wires of the braided
part.
The cushion part may have a cotton shape.
The sheath member may have a tubular body form.
The sheath member may have a casing body form.
The cushion part may be provided over an entire of the braided part
in a longitudinal direction of the conductive path.
The cushion part may be partially provided in the braided part in a
longitudinal direction of the conductive path.
The wire harness may further include a vane shaped cushion member
which is attached to the braided part and has flexibility.
BRIEF DESCRIPTION OF DRAWINGS
FIGS. 1A and 1B are diagrams showing a wire harness of the present
invention. FIG. 1A is a schematic diagram showing an arranged state
of a high voltage wire harness. FIG. 1B is a schematic diagram
showing an arranged state of a low voltage wire harness different
from the wire harness shown in FIG. 1A.
FIG. 2 is a perspective view showing a structure of the wire
harness of the present invention (first embodiment).
FIG. 3 is a sectional view of the wire harness shown in FIG. 2 (the
first embodiment).
FIG. 4 is a sectional view showing a modified example of a cushion
part (the first embodiment).
FIG. 5 is a sectional view showing a structure (a structure of a
harness main body) of a wire harness of another embodiment (a
second embodiment).
FIG. 6 is a sectional view showing a conductive path to which a
vane shaped cushion member is attached (the second embodiment).
FIG. 7 is a sectional view showing a structure of a wire harness of
other embodiment (a third embodiment).
DETAILED DESCRIPTION OF EXEMPLIFIED EMBODIMENTS
The above-described usual technique has a problem that when the
conductive path in the sheath member is greatly vibrated due to the
vibration during the driving of the vehicle, the conductive path
strongly hits an inner surface of the tube of the sheath member to
be damaged.
The present invention is devised by considering the above-described
circumstances, and it is an object of the present invention to
provide a wire harness which can suppress a vibration of a
conductive path in a sheath member and prevent a damage of it.
A wire harness includes one or a plurality of conductive paths and
a sheath member which accommodates and protects the conductive
paths. The sheath member is configured in a tubular body form or a
casing body form. The conductive path has a braided part as a
shield member. The braided part is arranged as an outermost layer
of the conductive path. In the braided part as the outermost layer,
a cushion part is formed over one part or an entire part thereof.
The cushion part is formed in such a state as to have an elasticity
toward a central direction of the conductive path and expand or
swell outward. The wire harness may further include a vane shaped
cushion member attached to the braided part and having
flexibility.
By referring to the drawings, a first embodiment will be described
below. FIGS. 1A and 1B are diagrams showing a wire harness of the
present invention. FIG. 1A is a schematic diagram showing an
arranged state of a high voltage wire harness. FIG. 1B is a
schematic diagram showing an arranged state of a low voltage wire
harness different from the wire harness shown in FIG. 1A. FIG. 2 is
a perspective view showing a structure of the wire harness of the
present invention. FIG. 3 is a sectional view of the wire harness
shown in FIG. 2. FIG. 4 is a sectional view showing a modified
example of a cushion part In the present embodiment, the present
invention is applied to a wire harness arranged in a hybrid motor
vehicle. However, the present embodiment can be applied to an
electric motor vehicle or an ordinary motor vehicle driven by an
engine.
In FIG. 1A, reference numeral 1 designates a hybrid motor vehicle.
The hybrid motor vehicle 1 is a vehicle driven by mixing two powers
of an engine 2 and a motor unit 3. To the motor unit 3, an electric
power from a battery 5 (a battery pack) is supplied through an
inverter unit 4. The engine 2, the motor unit 3 and the inverter
unit 4 are mounted on an engine room 6 located in a position where
front wheels are provided in the present embodiment. Further, the
battery 5 is mounted on a rear part 7 of the motor vehicle where
rear wheels are provided. The battery may be provided in an
interior of the motor vehicle located in a rear part of the engine
room 6.
The motor unit 3 is connected to the inverter unit 4 by a high
voltage wire harness 8 (a motor cable for a high voltage). Further,
the battery 5 is also connected to the inverter unit 4 by a high
voltage wire harness 9. An intermediate part 10 of the wire harness
9 is arranged in an under-floor 11 of the vehicle in the vehicle (a
vehicle body). Further, the intermediate part 10 is arranged
substantially in parallel along the under-floor 11 of the vehicle.
The under-floor 11 of the vehicle is a well-known body (a vehicle
body) and what is called a panel member and has a through hole
formed in a prescribed position. Into the through hole, the wire
harness 9 is water-tightly inserted.
The wire harness 9 is electrically connected to the battery 5
through a junction block 12 provided in the battery 5. To the
junction block 12, an external connection unit such as a shield
connector 14 arranged in a harness terminal 13 of a rear end side
of the wire harness 9 is electrically connected. Further, the wire
harness 9 is electrically connected to the inverter unit 4 through
an external connection unit such as a shield connector 14 arranged
in a harness terminal 13 of a front end side.
The motor unit 3 includes a motor and a generator. Further, the
inverter unit 4 includes an inverter and a converter in a
structure. The motor unit 3 is formed as a motor assembly including
a shield case. Further, the inverter unit 4 is formed as an
inverter assembly including a shield case. The battery 5 is formed
with an Ni-MH type or an Li-ion type and formed as a module. For
instance, a storage battery such as a capacitor may be used. It is
to be understood that the battery 5 is not especially limited as
long as the battery 5 can be used for the hybrid motor vehicle 1 or
the electric motor vehicle.
In FIG. 1B, reference numeral 15 designates a wire harness. The
wire harness 15 is a low voltage wire harness (used for a low
voltage) and provided to electrically connect a low voltage battery
16 in a rear part 7 of a motor vehicle in the hybrid motor vehicle
1 to an auxiliary device 18 (a device) mounted on a front part 17
of the motor vehicle. The wire harness 15 is arranged so as to pass
through an under-floor 11 of the vehicle (one example) like the
wire harness 9 shown in FIG. 1A and may be arranged so as to pass
through an interior side of the vehicle. Reference numeral 19 in
the wire harness 15 shows a harness main body. Further, reference
numeral 20 designates connector.
In FIGS. 1A and 1B, in the hybrid motor vehicle 1, the high voltage
wire harnesses 8 and 9 and the low voltage wire harness 15 are
arranged. The present invention may be applied to any of the wire
harnesses. However, as a typical example, the high voltage wire
harness 9 is adopted and described below. Initially, a composition
and structure of the wire harness 9 will be described below.
As shown in FIG. 1A and FIG. 2, the long wire harness 9 arranged so
as to pass through the under-floor 11 of the vehicle includes a
harness main body 21 and the shield connectors 14 (the external
connection units) respectively arranged in both the terminals (the
harness terminals 13) of the harness main body 21. Further, the
wire harness 9 includes a clamp not shown in the drawing in order
to arrange the wire harness itself at a prescribed position and a
stop member (for instance, a grommet) which is not shown in the
drawing.
In FIG. 2 and FIG. 3, the harness main body 21 includes a long
conductive path 22 and a sheath member 23 which accommodated and
protects the conductive path 22. The number of the conductive path
22 shows one example, and may be set to two or more. As for the
sheath member 23, the sheath member 23 having such a structure as
to accommodate and protect the low voltage wire harness 15 together
may be used.
Initially, the conductive path 22 and the sheath member 23 in the
harness main body 21 will be described below. Then, a manufacturing
method of the wire harness 9 and an operation of a cushion part 27
will be described below.
In FIG. 2 and FIG. 3, the conductive path 22 includes an
electrically conductive conductor 24, an insulating insulator 25
with which the conductor 24 is coated and a braided part 26 which
exhibits a shield function. That is, the braided part 26 performs
as a shield member. Namely, the conductive path 22 having no sheath
is used. Since the sheath is not provided in the conductive path
22, the conductive path 22 can be the lighter. Since the conductive
path 22 is long, the conductive path 22 can be made to be extremely
lighter than a usual example.
In FIG. 2 and FIG. 3, the conductor 24 is configured in section of
a circular form and formed with copper or copper alloy, or aluminum
or aluminum alloy. The conductor 24 may have any of a conductor
structure formed by twisting element wires or a rod shaped
conductor structure with a section of a rectangular form or a
circular form (a round form). The conductor 24 is a conductor
structure of a straight angle single core or a round single core
for instance. In this case, an electric wire itself has a rod
shape. In the above-described conductor 24, the insulator 25 made
of an insulating resin material is extrusion-molded on an outer
surface.
In FIG. 2 and FIG. 3, the insulator 25 is extrusion-molded on an
outer peripheral surface of the conductor 24 by using a
thermoplastic resin material. The insulator 25 is configured as a
coat with a section of a circular form. The insulator 25 is formed
so as to have a prescribed thickness. As the above-described
thermoplastic plastic resin, various kinds of well-known
thermoplastic resins can be used and are suitably selected from
high polymer materials such as a polyvinyl chloride rein, a
polyethylene resin, a polypropylene resin or the like.
In FIG. 2 and FIG. 3, the braided part 26 is arranged as an
outermost layer of the conductive path 22. Such a braided part 26
is configured in a tubular form by knitting extra fine metallic
element wires having an electric conductivity. Further, the braided
part 26 is formed in such a configuration and size as to cover an
entire part of an outer peripheral surface from one end to the
other end of the insulator 25. In the above-described braided part
26, a cushion part 27 is formed. The cushion part 27 is
substantially cotton shaped in the present embodiment.
In FIG. 2 and FIG. 3, the cushion part 27 is a part which has
elasticity toward a central direction of the conductive path 22 and
expands outward. In other words, the cushion part 27 has elasticity
in a radial direction of the conductive path 22. The cushion part
27 is made of the element wires of the braided part 26. When the
form of such the cushion part 27 is metaphorically said, the
element wires of the braided part 26 may be configured in "a form
of cotton", "a form of cloud" and "a form of a nest". Further, in
other words, the element wires of the braided part 26 are
configured in a "fluffy form" or a "bushy form". The cushion part
27 is formed in such a way that the element wires are accurately
knitted by a device, an ordinary braided part is, for instance,
shut and opened or released or the braided part is simply
configured to the above-described forms.
In the present embodiment, as shown in FIG. 2 and FIG. 3, the
cushion part 27 is formed over an entire part of the braided part
26. However, the present invention is not limited thereto and the
cushion part 27 may be partially formed as shown in FIG. 4.
The cushion part 27 may be preferably supposed to obtain a cushion
effect and a spring effect by the metallic element wires of the
braided part 26. The metallic element wires can make it difficult
to collapse the cushion part. Thus, the effects can be maintained
for a long time.
In FIG. 2 and FIG. 3, the sheath member 23 is configured in one
straight tubular body form by molding an insulating resin. The
sheath member 23 is straight before it is used. Further, the sheath
member 23 is configured in a form whose body is not split. In other
words, the sheath member 23 is configured in a form having no
slits. The sheath member 23 is configured in a form which is not a
split tube. Further, the sheath member 23 is configured with a
section of a circular form so as to meet the form of the conductive
path 22.
The above-described sheath member 23 includes a flexible tube part
28 having flexibility and a straight tube part 29 as a part which
arranges the conductive path 22 straight. However, an entire part
of the sheath member may be formed with the flexible tube part 28
for instance. A plurality of the flexible tube parts 28 and the
straight tube parts 29 are formed in an axial direction of the
tube. Further, the flexible tube parts 28 and the straight tube
parts 29 are alternately arranged and formed.
In FIG. 2, the flexible tube part 28 is arranged so as to meet a
vehicle attaching form. The vehicle attaching form includes a form
of a part in which the wire harness is arranged or a form of an
object to which the wire harness is attached. Further, the flexible
tube part 28 is also formed with such a length as to meet the
vehicle attaching form. The length of the flexible tube part 28 is
not fixed and respectively formed with a required length so as to
meet the vehicle attaching form. Such a flexible tube part 28 is
former so that the flexible tube parts 28 may be respectively bent
at desired angles under a packed state of the wire harness 9,
during its transportation and further when a path to the vehicle is
arranged. Namely, the flexible tube part 28 can be bent to have a
bending form and can be properly returned to an original straight
state as shown in the drawing (a state at the time of molding of
the insulating resin). The flexible tube part 28 of the present
embodiment is configured in a bellows form (this shows one
example).
In FIG. 2 and FIG. 3, the straight tube part 29 is formed as a part
which has no flexibility as in the flexible tube part 28. Further,
the straight tube part 29 is also formed as a part which is not
bent under a packed state, during its transportation and when the
path is arranged. The part which is not bent means a part that is
not allowed to positively have the flexibility. The straight tube
part 29 is configured in a long straight tubular form. An outer
peripheral surface of such a straight tube part 29 is configured in
a form having no irregularities (this shows one example).
The straight tube part 29 is arranged in a more rigid part than
that of the flexible tube part 28. Such a straight tube part 29 is
provided with such a position or length as to meet the vehicle
attaching form. The longest straight tube part 29 of the plurality
of straight tube parts 29, which is not especially shown in the
drawing, is formed as a part arranged in the under-floor 11 of the
vehicle (see FIG. 1) in the present embodiment.
In the above-described composition and structure, the wire harness
9 is manufactured in such a way as described below (a detailed
drawing is omitted). Namely, the wire harness 9 is manufactured in
such a way that the conductive path 22 is inserted from one end
opening to the other end opening of the sheath member 23 which has
an entire part formed with a resin substantially straight. Further,
the wire harness 9 is manufactured by attaching the clamp or the
grommet, or boots to prescribed positions of an outer surface of
the sheath member 23. Further, the wire harness 9 is manufactured
by providing the shield connectors 14 in terminal parts of the
conductive path 22.
After the wire harness 9 is manufactured as described above, when a
bending process is applied thereto so as to fold a prescribed
flexible tube part 28, the wire harness 9 is completely packed. The
wire harness 9 in a packed state is compact and transported to a
vehicle attaching spot under such a compact state.
In the vehicle attaching spot, the wire harness 9 is attached to
the object of the vehicle to which the wire harness is attached
from a long part corresponding to the under-floor 11 of the
vehicle. In the wire harness 9, since the longest straight tube
part 29 of the sheath member 23 is arranged in a long part
corresponding to the under-floor 11 of the vehicle, the wire
harness 9 is attached to the vehicle under a state that a bending
is suppressed. At this time, the wire harness 9 is attached to the
vehicle with a good working property. After the long part
corresponding to the under-floor 11 of the vehicle is fixed by the
clamp or the like, while the flexible tube part 28 in the sheath
member 23 is flexed (bent), a remaining part is attached to the
vehicle. When a series of operations relating to the attachment is
finished, the wire harness 9 is arranged in a desired path.
In FIG. 3, in the conductive path 22 inserted into the sheath
member 23, a play rate of the conductive path 22 in the sheath
member 23 is reduced due to an existence of the cushion part 27.
Then, under such a state, when the conductive path 22 in the sheath
member 23 is liable to vibrate due to a vibration, for instance,
during a driving of the vehicle, the cushion part 27 formed in the
braided part 26 collides with an inner surface (an inner peripheral
surface) of the tube of the sheath member 23. A collision at this
time is absorbed by an elasticity of the cushion part 27. Further,
a relative vibration between the conductive path 22 and the sheath
member 23 is suppressed and reduced by the existence of the cushion
part 27.
As described above by referring to FIG. 1 to FIG. 4, in the wire
harness 9 of the present invention, since the conductive path 22
having the braided part 26 formed as the outermost layer is used
and the cushion part 27 is formed in the braided part 26, for
instance, even during the driving of the vehicle, the vibration of
the conductive path 22 in the sheath member 23 can be effectively
absorbed by the elasticity of the cushion part 27. Further, the
relative vibration of the conductive path 22 and the sheath member
23 can be also effectively suppressed (reduced). Accordingly, in
the wire harness 9 of the present invention, the vibration of the
conductive path 22 in the sheath member 23 can be suppressed and a
damage of the conductive path 22 can be advantageously prevented at
the same time.
By referring to the drawings, a second embodiment will be described
below. FIG. 5 is a sectional view showing a structure (a structure
of a harness main body) of a wire harness of another embodiment.
Further, FIG. 6 is a sectional view showing a conductive path to
which a vane shaped cushion member is attached. Component members
basically the same as those of the above-described first embodiment
are designated by the same reference numerals to simplify an
explanation.
In FIG. 5, a harness main body 21 in a wire harness 9 includes a
long conductive path 22, a sheath member 23 which accommodates and
protects the conductive path 22 and a vane shaped cushion member 30
having a flexibility. The second embodiment is characterized by a
point that the vane shaped cushion member 30 is further
included.
In FIG. 5 and FIG. 6, the conductive path 22 includes an
electrically conductive conductor 24, an insulating insulator 25
with which the conductor 24 is coated and a braided part 26 which
exhibits a shield function. That is, the braided part 26 performs
as a shield member. Further, in the braided part 26, a cushion part
27 is formed.
In FIG. 5, the sheath member 23 is configured in one straight
tubular body form by molding an insulating resin. The sheath member
23 is straight before it is used. Further, the sheath member 23 is
configured in a form whose body is not split. In other words, the
sheath member 23 is configured in a form having no slits. The
sheath member 23 is configured in a form which is not a split tube.
Further, the sheath member 23 is configured with a section of a
circular form so as to meet the form of the conductive path 22.
The above-described sheath member 23 includes a flexible tube part
28 having flexibility and a straight tube part 29 as a part which
arranges the conductive path 22 straight. This structure shows one
example. For instance, an entire part of the sheath member may be
formed with the flexible tube part 28. A plurality of the flexible
tube parts 28 and the straight tube parts 29 are formed in an axial
direction of the tube. Further, the flexible tube parts 28 and the
straight tube parts 29 are alternately arranged and formed. The
flexible tube part 28 can be bent to have a bending form and can be
properly formed so as to be returned to an original straight state
(a state at the time of molding of the insulating resin).
In FIG. 5 and FIG. 6, the vane shaped cushion member 30 has a
substantially vane shape which protrudes outward. The vane shaped
cushion member 30 has a flexibility and elasticity toward a central
direction of the conductive path 22. In other words, the vane
shaped cushion member 30 has elasticity in the radial direction of
the conductive path 22. The vane shaped cushion member 30 has a
cantilever arm form. Not only the cushion part 27 of the braided
part 26, but also the vane shaped cushion member 30 is provided to
obtain more a cushion effect. Such a vane shaped cushion member 30
includes an annular attaching part 31 attached to the braided part
26 and a plurality of flexible and elastic parts 32 which protrude
obliquely and outward from the annular attaching part 31 and is
configured in, for instance, an illustrated form. In the present
embodiment, the four flexible and elastic parts 32 are provided at
equal pitches in a circumferential direction (the number shows one
example). The vane shaped cushion members 30 are provided in the
same positions (or pitches) as those of, for instance, the partly
formed cushion parts 27 shown in FIG. 4.
In the above-described composition and structure, the wire harness
9 is manufactured in such a way as described below (a detailed
drawing is omitted). Namely, the wire harness 9 is manufactured in
such a way that the conductive path 22 to which the substantially
vane shaped member 30 is attached is inserted from one end opening
to the other end opening of the sheath member 23 which has an
entire part formed with a resin substantially straight. Further,
the wire harness 9 is manufactured by attaching a clamp or a
grommet, or boots to prescribed positions of an outer surface of
the sheath member 23. Further, the wire harness 9 is manufactured
by providing shield connectors 14 in terminal parts of the
conductive path 22. The wire harness 9 is packed or a path is
arranged in the same manner as that described in the first
embodiment.
In FIG. 5, in the conductive path 22 inserted into the sheath
member 23, a play rate of the conductive path 22 in the sheath
member 23 is reduced due to an existence of the cushion part 27 and
the vane shaped cushion member 30. Then, under such a state, when
the conductive path 22 in the sheath member 23 is liable to vibrate
due to a vibration, for instance, during a driving of the vehicle,
the flexible and elastic parts 32 are bent in the vane shaped
cushion member 30 which comes into contact with an inner surface
(an inner peripheral surface) of the tube of the sheath member 23.
At this time, a force of the conductive path 22 which is liable to
vibrate is absorbed. Then, if the flexible and elastic parts 32 are
largely bent, the cushion part 27 formed in the braided part 26
collides with the inner surface (the inner peripheral surface) of
the tube of the sheath member 23. A collision at this time is
absorbed by an elasticity of the cushion part 27. In the present
embodiment, a relative vibration between the conductive path 22 and
the sheath member 23 is suppressed or reduced by the existence of
the cushion part 27 and the vane shaped cushion member 30.
As described above by referring to FIG. 5 to FIG. 6, the second
embodiment has the same effects as those of the first embodiment.
Namely, for instance, even during the driving of the vehicle, the
vibration of the conductive path 22 in the sheath member 23 can be
suppressed and a damage of the conductive path 22 can be
advantageously prevented at the same time.
It is to be understood that the cushion effect can be obtained only
by the vane shaped cushion member 30 without providing the
substantially cotton shaped part 27 of the braided part 26.
Now, by referring to the drawings, a third embodiment will be
described below. FIG. 7 is a sectional view showing a structure of
a wire harness of another embodiment. Component members basically
the same as those of the above-described first embodiment are
designated by the same reference numerals and a detailed
description thereof will be omitted.
In FIG. 7, a wire harness 9 includes an conductive path 22 and a
casing shaped sheath member (a protector P) which accommodated and
protects the conductive path 22. In the braided part 26 of the
conductive path 22, a cushion part 27 is formed. The third
embodiment is an embodiment which uses the protector P in place of
the sheath member 23 in the first embodiment. In addition thereto,
an embodiment may be adopted in which a protector P is arranged
between sheath members 23.
The third embodiment has the same effects as those of the first
embodiment. Namely, for instance, even during the driving of the
vehicle, the vibration of the conductive path 22 in the sheath
member (the protector P) can be suppressed and a damage of the
conductive path 22 can be advantageously prevented at the same
time.
Here, features of the above-described exemplary embodiments of the
wire harness according to the present invention are respectively
briefly summarized in below-described (a) to (h).
(a) A wire harness (8, 9) including:
a conductive path (22) including a braided part (26); and
a sheath member (23) accommodating the conductive path (22) so as
to protect the conductive path (22), wherein
the braided part (26) is provided as an outermost layer of the
conductive path (22), and
the braided part (26) includes a cushion part (27) having
elasticity in a radial direction of the conductive path (22) and
projecting outward in the radial direction toward the sheath member
(23).
(b) The wire harness (8, 9) as set forth in the above (a), wherein
the cushion part (27) is made of element wires of the braided part
(26).
(c) The wire harness (8, 9) as set forth in the above (a), wherein
the cushion part (27) has a cotton shape.
(d) The wire harness (8, 9) as set forth in the above (a), wherein
the sheath member (23) has a tubular body form.
(e) The wire harness (8, 9) as set forth in the above (a), wherein
the sheath member (23) has a casing body form.
(f) The wire harness (8, 9) as set forth in the above (a), wherein
the cushion part (27) is provided over an entire of the braided
part (26) in a longitudinal direction of the conductive path
(22).
(g) The wire harness (8, 9) as set forth in the above (a), wherein
the cushion part (27) is partially provided in the braided part
(26) in a longitudinal direction of the conductive path (22).
(h) The wire harness (8, 9) as set forth in the above (a), wherein
the wire harness (8, 9) further includes a vane shaped cushion
member (30) which is attached to the braided part (26) and has
flexibility.
According to the present invention having the above-described
feature, when the conductive path in the sheath member is liable to
vibrate due to a vibration, for instance, during a driving of the
vehicle, the cushion part formed in the braided part collides with
an inner surface of the tube of the sheath member. A collision at
this time is absorbed by the elasticity of the cushion part.
Further, a relative vibration between the conductive path and the
sheath member is suppressed (reduced) by an existence of the
cushion part.
According to the present invention having the above-described
feature, when the conductive path in the sheath member is liable to
vibrate due to a vibration, for instance, during a driving of the
vehicle, the vane shaped cushion member attached to the braided
part is pressed to the inner surface of the tube of the sheath
member to be bent. Thus, a force of vibration is absorbed by the
bending. Further, according to the present invention, a relative
vibration between the conductive path and the sheath member is
suppressed (reduced) by the vane shaped cushion member.
In the present invention according to the above (a), since the
conductive path having the braided part formed as the outermost
layer is used and the cushion part is formed in the braided part,
for instance, even during the driving of the vehicle, the vibration
of the conductive path in the sheath member can be effectively
absorbed by the elasticity of the substantially cotton shaped part.
Further, the vibration of the conductive path can be effectively
suppressed (reduced) by the existence of the cushion part.
Accordingly, according to the present invention, a damage of the
conductive path can be advantageously prevented.
In the present invention according to the above (h), since the vane
shaped cushion member is attached to the braided part, for
instance, even during the driving of the vehicle, the vibration of
the conductive path in the sheath member can be effectively
absorbed by the vane shaped cushion member. Further, the vibration
of the conductive path can be effectively suppressed (reduced) by
the existence of the vane shaped cushion member. Accordingly,
according to the present invention, the damage of the conductive
path can be more advantageously prevented.
In addition thereto, it is to be understood that various changes
may be made within a range which does not change a gist of the
present invention.
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